text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45.c
  Label Definition File: CWE121_Stack_Based_Buffer_Overflow__CWE805.string.label.xml
  Template File: sources-sink-45.tmpl.c
  */
  /*
   * @description
   * CWE: 121 Stack Based Buffer Overflow
   * BadSource:  Set data pointer to the bad buffer
   * GoodSource: Set data pointer to the good buffer
   * Sinks: snprintf
   *    BadSink : Copy string to data using snprintf
   * Flow Variant: 45 Data flow: data passed as a static global variable from one function to another in the same source file
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifdef _WIN32
  #define SNPRINTF _snwprintf
  #else
  #define SNPRINTF snprintf
  #endif
  
  static wchar_t * CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_badData;
  static wchar_t * CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_goodG2BData;
  
  #ifndef OMITBAD
  
  static void badSink()
  {
      wchar_t * data = CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_badData;
      {
          wchar_t source[100];
          wmemset(source, L'C', 100-1); /* fill with L'C's */
          source[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possible buffer overflow if the size of data is less than the length of source */
          SNPRINTF(data, 100, L"%s", source);
          printWLine(data);
      }
  }
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_bad()
  {
      wchar_t * data;
      wchar_t dataBadBuffer[50];
      wchar_t dataGoodBuffer[100];
      /* FLAW: Set a pointer to a "small" buffer. This buffer will be used in the sinks as a destination
       * buffer in various memory copying functions using a "large" source buffer. */
      data = dataBadBuffer;
      data[0] = L'\0'; /* null terminate */
      CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_badData = data;
      badSink();
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2BSink()
  {
      wchar_t * data = CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_goodG2BData;
      {
          wchar_t source[100];
          wmemset(source, L'C', 100-1); /* fill with L'C's */
          source[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possible buffer overflow if the size of data is less than the length of source */
          SNPRINTF(data, 100, L"%s", source);
          printWLine(data);
      }
  }
  
  static void goodG2B()
  {
      wchar_t * data;
      wchar_t dataBadBuffer[50];
      wchar_t dataGoodBuffer[100];
      /* FIX: Set a pointer to a "large" buffer, thus avoiding buffer overflows in the sinks. */
      data = dataGoodBuffer;
      data[0] = L'\0'; /* null terminate */
      CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_goodG2BData = data;
      goodG2BSink();
  }
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_good()
  {
      goodG2B();
  }
  
  #endif /* OMITGOOD */
  
  /* Below is the main(). It is only used when building this testcase on
   * its own for testing or for building a binary to use in testing binary
   * analysis tools. It is not used when compiling all the testcases as one
   * application, which is how source code analysis tools are tested.
   */
  #ifdef INCLUDEMAIN
  
  int main(int argc, char * argv[])
  {
      /* seed randomness */
      srand( (unsigned)time(NULL) );
  #ifndef OMITGOOD
      printLine("Calling good()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE805_wchar_t_declare_snprintf_45_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  